Transmission-gearing.



o. s. LEcH a M. s. EVANS.

TRANSMISSION GEARING.

nrrucmon mw M129. 1914.

Patented June 1, 1915.

4 sains-sum l4 n. s, LEECH 11M. s. EVANS.

TRANSMISSION GEARING.

APPLICATION FILED APR. 29. I9|4 1,141,563. f Pate/111911111101', 1915.

4 SHEETS-SHEET 2.

zu 3 31% h1 @was 'A S. Leech* o m yJVI. ,5. Evans,

` www D. S. LEECH 6L M. S. EVANS.

TRANSMISSION GEARING.

APPLlcmon FILED M129, |914.

l ,141,563 Patented J une 1, 1915.

4 SHEETS-SHEET 3- 6150i hw we n D. 5 L geel? 219311 ozs m y MJEbams,

v @Maniago D. S. LEECH & M. S. EVANS.

TRANSMISSION GEARING.

APPucAnoN mm APR, 29, |914.

Vi Fue/.saca

las

UNITED STATES PATENT OFFICE..

DONALD s. LEECH AND MERLIN s.. EVANS, 0F. Lumi. oHIo`.

TRANsMissIoN-GEARINQ.

'K To all/whom 'itgmay concern: A

.Be it known that We; 'DONALDS, LEECH and MiiIiLINSLEVANS, citizensofthe United Y `S`tates, residifnsifv atfLima,l in the Vcuntylof'fAllen-and State of Ohio, have'invented ce'rg' "The'presnt'inVenti-onrelates to'iniprove- 10 ordinarily employed' to operate' the frictionprovideappratu's of the above mentioned v chracteii wherein thecontrollever is locked against'moveinent, priorto the operation of theshifting lever oi* pedal for disconnectinaf .the enginefshaft' from thedriving wheels of the vehicle- `..A1further object of theiniention is toprovide apparatus of the above mentioneftl charactegvhich :isimple inconstruction".A

use, `gtrig; anddurable.

Aljffurther object of the vinvention i's 'to provi( e apparatus of the.above mentioned ter'` which iscoinpact in construction, .40. nd vwhichwill occupy very little spaccin char fuse.

Other obiec'ts and advantages of the inventionwill be api'iarent d uringthe course of the follovinrr description.

In the eccomiianvii'igr drawings foi-ming :1 part of this spccificationand in which like numei'alS are ci'i'iiiloycd toV` designate like part-sthroughout thcnsanie` Figure i is a vplan view of transmission gearing'einliorving our invention., iiarstliei-i t tiring shown in section; Fig.Z isa loiif'fit. 'l vertical sectional vievv taken on liiix.-

Y, of Fig. '1, Fig. 3 is a. plan View of the i-.nni'ol lever, Fig. 4. isa side elm-'ation 'i means, shoii'iiiLr the com the shifting,T position`Fig.

l particularly well iirobl'cct Off' thc-invention `istevv inexpensiie tomanufacture, convenienti@ apepiiica'iioii of Letters raient.' PatentedJune 1 1915; A Ppl'icatbmied pin 29, 191.4. serial-N0. 835,141. ushowing the connectingr element @in the position, Fig. 6 is a similarview of a 'slightly' different forgiaof cliitchshi-fting'means, 'aiid,

Fig.- '7 21R-central longitudinal'sectional In. the draivingsjwhereinfor the'pnpose. of illustration iS shown a prefcrredfcn ibotli- '.rnentofl the invention, the numeral1 0/.desL ignates e preferablyhorizontallv arranged casing.' secured. to the frame Workof-lanautomobile or other iehiclc, (not Shown). by

anysuitablc means. Journaled within a siiitable `bearin2' l'1 -formdupon one end ofthe cz'ising:v 10,'isa driving shaft 12, tonbe connectedWith'fthe crankshaft of the engineg'by nieanfsjof a pcscdj withinthcca'singl0 is .afpinionbr unon a rot-@tablecounter-Shaft'.15.'oiiriiiled throughbcarings,.16,. as shown.`This-lamer pinionorV gear-14 jis .no'i'niallv' locked tothe vii'multiple disk or cone clutch.,f(riot"shewn)i.2

Rigidly connectedv .with the inner. en d of the i dri-ving sha-ft .lf2(see Figs. I and dis- 'I 5 igrnatcsa driven rotatable "shaft, adaptedtfr' be connected with. the. rear` wheels of 'thc automobile or othervehicle hy means of a suitable differential gearing; asKis customary.

The;` driven shaft 18 is ai-rance 'in end-to- .cud relation to thedrivinc'shaft 2,=.a'n d has one end thereof ljournaled vfithinza"xise'a'rii'iglf if)` the opi'io'sitec'nd of the stime bcinlcfiro# videdwith a' reduced extensiondrotatalily mounted within .an openingr formedin`- head 2i of the' shaft l2. as shown. -Rota-z1 tzihlv oi' lense-.lymounted upon .thie driven shaft l-.Snre pinions or :Icai's 2% and 24,hut these pinivns or gears cannot inore'per' rfqitiveiv lungitiidinalliYof thedriven shalt' sides or faces \vit`n-l0othcd clutch-elements '27.9? mid rigidlv secured thereto and preferably formed integral therewith..Cziiiiried upon the driven shaft'l bv moans of teeth Q, passing into alongitudinal slot Versingsmall a stub-shaft 3 26', are coactingtoothedclutch-elements 29, 30, --31 and '32, which vare adapted-*to bemoved into and out of engagement respectively `with the clutchelements25, 26, 27

- and 28, as shown.

-The large pinion or gear 223s engaged by a smaller pinion or gein-,33,rigidly gmounted upon the counter-shaft 1 5; the large pinion or gear 23by a smaller gear-jor Apinion 34,

, -by av pinion or gear L37, rigidly'mounted upon the counter-shaft -15,as shown'. 4The 3Q-acting clutch-elements 25 and l29 constitute vhigh seed drive; the `elutch-elements 26S and ,30 orward intermediate drive;the clutch-elements 27 and'l forward low speed drive; land. theclutch-elements 28 and 32'ref' 'verse drive, as indicated.

he clutchelement 29 is moved longitudinallyof the driven shaft 18'by ashifting y; fork 38, operating within an annular grom'e 39; theclutch-element 30 by a Ashifting fork 40, operating within an annulargroove 41; thecliit'ch-elemen't 3l by a shifting fork 42, operatinwithin an annular groove 43;'and theclutc -element 32 by :L -shiftingfork 44 operating within an annular groove 45, as

shown. As more clearlywshown in Figs. l,

4, and 5, each of these shifting forks is provided at its outer end withan enlarged forked head 45, having a transverse opening 46,*to slidablyreceire'a relatively stationary horizontal guide rod 47, extending intoIbearings 48- and held fasttlierein by means of clamping bolts 49, orthe like, as more clearly shown in Fig. 1. Each of the forked heads 45receives a vertically reciprocatory or movableboltor connecting element47 (see'Figs. 4 and 5),pr9vi ded with a 1ongitudinally extending slot oropening 48', to receive transverse pins 49, secured to the forked head45, as shown.

The bolt. or `connecting element 47, as more clearly shown'in Figs. 4and 5, is provided with a lat-oral extension 50 adapted to -f bealternately moved into openings or notches 51 `and 52, formed in anupper locking bar or element 53 vand a lower shifting bai or element 54,as shown. The locking bar or element 53 (see more particularly Figs 2,4, and 5), is rigidly secured to the vcasing l0, asvshown at 54.A Theshifting bar or element 54 is longitudinally movable or reciprocatoryand is .provided at one end with a reduced extcnsioir55, operatingwithin a bearing or guide 56, and at its oppo-1 site end with anoperating rod 57, operat? ing through va bearing or guide 58, as shown.The rod 57 extends forwardly outwardly of Y andv beyond ,thc casing l0and has a ring lrigidly secured thereto which is engaged bv a suitablystift' c'oinpressible and eXpansibl-c ,coil spring 60, mounted in thebearing or shifting element or bar 54. .This selective means com risescams 61 and 62, adapted-to enga-ge wit the cam-ends 63 andl 64 formedupon each bolt or connecting element 47', as clearly shown in Fig. 5.These cams 61 and 62 are arranged above and below the boltor connectingelement 47 and.4 are rigidly mounted upon rotatable cam-shafts 63 64respectively, as shown. These eamshafts, as clearly shown in Fig. 2,yare journale'd through bearings 65.and 66, and have inter-meshingpinions or gears 67 -and 68 rigidly connected with corresponding endsthereof, whereby they `rotate together. It is to be understood that eachset or pair of cams 6l and 62 is so arranged upon the camshafts G3and64"with relation tothe other pairs or sets, that only one set or pairofY the same can operate-at the same time, to move the correspondingbolt or connecting element 47"to the operative position orinto theopening or notch 52', and this set or pair of cams returns the lockingbolt or element 47 to the inoperative position or within the opening ornotch 51, before or.at the same time that the other set or pair of camsmoves the corresponding other element or holt 47 to the operativeposition. In Fig. 6, there is shown a different form of'shifting means,the camf?. being dis ensed with. A bolt or connecting element4 a -ismountcdto reciprocate within the forked head 45,

and

to move into and out of the notches 5l andis adapted to bc rotated orswung in 'prox-- iniity to a relatively stationary ring or track lo,secuiedto a stationary portion of the steering mechanism of theautomobile, by

any suitable means, (not shown). YThis control lever is provided with aspring pressed latch 74, of any well known or `preferred i il type,adapted to fit within a selected one of the notches 75, designated, 1,2, 3, R and N, the same being abbreviations for forward fi'rst speed,forward second speed, forward third or high speed, reverse and neutral,respectively.

The forward end of the rod 57 is pivotally connected, as shown at 57',with an extension-rod 58', provided with a slotted head 59', receivin atransverse pin 60', carried by a. ivote lever 61, fulcrumed at 62. Thispivoted lever is included in a foot operated pedai 62, that is employedto operate the multiple friction-disk or cone clutch mechanism,ordinarily used to connect and disconnect the crank of an engine withand from the driving wheels of the vehicle, in this instance through themedium of the driving shaft l2 and associated elements. The pedal 62renders this multiple frictiondisk active when swung rearwardly by thespring 60, and inactive when depressed by the foot of the operator, asis customary.

The vggriiration of the apparatus is as follows: en the engine isrunning, the friction-disk clutch is active for rotating the drivingshaft 12, which rotates the pinion or gear 13, pinion or gear 14, shaft15 and pinions or gears carried thereby. The con trol lever 72 being atneutral, all of the bolts 47 will be in the inoperative position,

within openings 51, the same being heid within these openings by theshifting bar or element 54 and cams 62, which now occupies the forwardposition. As ali of the toothed clutch mechanisms are now inactive, therotation of the driving shaft 12 will not be im- Enrted to the drivenshaft l18. The shifting ar 54, being 'in the forward position, the samewill positively prevent the downward movement of the bolts 47, wherebythe control lever 72 will be locked against movement. To drive thegearing at forward first or low speed, the pedal l` rer 51 is depressedby the foot, which sim ltaneously renders the friction-disk clutchnactive and moves the shifting bary or element 54 to the left, wherebyopenings or notches 52 are brought into alinement with the bolts 47. Thecontrol lever 72 is now moved to the forward first speed opening ornotch 75, whereby shaft 71 is turned, which through the medium of thebeveled gears and 69, turns the cani-shaft (53. The camshaft 64 isturned in an opposite direction b the pinions 67 and 68. The cams 61 an62 in the forward low speed drive, now move or shift the bolt 47 in thisdrive, downwardly into the opening or notch 52 of the shifting bar orelement 54. The other bolts 47 are not moved out of the openings 51.Upon the pedal lever 61 being gradually released and returned by thespring 60.to the elevated position, as is customary in operating thefrictiondisk clutch, the shifting ber or element 54 travels tothe right,moving the shifting fork 42 in the forward low spe/ed drive 1n the samedirection, whereby clutch element 31 is moved into operative engage mentwith the clutch element 27. The ypin4 ion or gear 23 is now locked tothe shaft 1.8, to drive the same. The rotation of the shaft 12 isimparted to the counter shaft 15 bv pinions 13 and 14, and the countershaft will now rotate the driven shaft 18 at forward low speed throughthe medium of thc small pinion 84 operating in engagement with anddriving the large pinion 2B. The shifting bar or element 54 being nowmoved to the right, the same locks all of the bolts 47 except theorie inthe forward low speed drive, within the openings or notches51, the bolt47 in the forward iow speed drive be ing retained within the opening 52by the lock bar or element 53, whereby the control lever 72 is lockedagainst inovenient, prior to the depression of the pedal lever 61'. Whenit'. is desired to use the forward intermediate drive, the pedal lever61 is again depressed, which renders the frictionfdisl clutch inactiveand shifts bar or element 54 to the left, bringing openings or notchesin ailnement with openings or notches 51. The control lever 72 is nowmoved to the second or intermediate opening or notch 75, whereby thecamshafts 63 and 64 are turned, whereby bolt 47 .in the forward lowspeed drive is returned within the opening or notcli' 51, the clutchelements 31 and 27 having been previously disengaged. The bolt 47 in theforward intermediate drive will be shifted or moved downwardly, to enteropening or notch 52 and entirely out of opening or notch 51. When thepedal le ver 61 is again released, the friction-dist clutch is renderedactive, the bar 54 moved to the right, and fork 4() brings clutch element 30 into operative engagement. with clutch element 2G, to lockpinion 22 to the shaft 18. The shaft 12 will now drive the shaft 18 atforward intermediate speed, tho pinion 13 rotating pinion 14, whichrotates counter-shaft 15, to drive pinions 33, which in turn drivespinion 22, which now locked to the shaft 18.

The operation of the other drives are so similar to those alreadystated, it is thought to be unnecessary to set them forth in detail, itbeing suicient to state that in operating each of the drives, the pedallever 61 is first depressed to move the bar 54 to the end of its travelto the left, the control le ver 72 then moved to the desired opening ornotch 75 corresponding to the selected drive, and the pedal lever 61gradually re leased, whereby the corresponding clutch in the selecteddrive is rendered active. Attention is called to the fact that in thehigh speed drive, the shaft 18 is not ,driven through the medium of thecounter-shaft 15,

Cri

siicli shaft being directly connected With the sliiil't 115, vvlienelim-li element @'29 operatively engages ifliiitzli element 25.

lt is to lie understood :init tl'ie forni of the invention lierevvitlisliewn :ind described is to lie tiilien as a preferred example of thesaine` and that various change-s in tlie shape, size, and arrangement ofparts may be re`l sorted to ivillioiit departing from the spirit of tlieinvention or tim scope of ille sul;- joined claims.

Having described claim z" 1. In transmission gearing, ii eliitclimeelianism, an element connected with tbe. clutch mechanism to rendertile same active and iiiactive, ii moi-sible shifting member providedwith means for :ilordiiig operative conne@ tion with a bolt` :i boli;connected with tlie element and movable transversel y of the shiftingmeniber toward and away from tlitsame to cooperate with the meansthereof, and means to shift the bolt laterally with re 'spent to the slil'ting member.

2. ln transmission gearing, a clutch merlianism, a longitiidiimliymovable shifting member provided vvitl'i holding means, :in

the invention, we.

felement associated ivitli tlie cliitoli meirlizr nism to render theonine active and inactive als and niovalile witli relation to thelongitudinally movable siiiftivig inenioer to engage and disengrige the`holding means thereof, means to move the element, :ind means to movetlie shifting ii'ieniliiir.

3. ln transmission geziiiigi driving and driven rotatable ineniliers,normally inactive variable speed driving devices to succes sivelyoperiitivolj connect tlio driving :ind driven rotiitalile anonimi-s, ainovalil, :nifting member normally free from operative connection ivitlithe driving duvio n frietion olntrli operating leier connected with tlieshifting nieirilier to :.ipinorimatel multnneoiislg render tlie frictioneliitc inactive for cutting oil. the engine' from the driving; rotatableinei'iilier and move the shifting; nic-roher to tlie storting position,and selective n ins to oi ',rativelv Connect one oi tlie ninnjiiiijinilfive iliii'iiig deal es will! ilse Chilling ineniliei' vvliereliydie immo is rendered at'ii e iigion tin-f reiii'i'i n'ioveini'nt of thelever ii'l'iieli renders ilie friction cliitt'li active `.lii tiasinggenriiigg driving' 'and driven rotaiiilile n one? normally inactivevariable i to siicc veiv ooit-i innert tln driving :intl dim nl'oniiillle iin, rs` ii movable Shri-tingr member. mains to render thedriving dt vi :s :ittive including i plurality of connect# ing membersmorali into and ont of engagement ivitli tlie shifting" ineiiilier,seleetive' means to more onv-y ol the eonneoting members into engagementivltii tin: shitting member While the other connecting members memosdriven rotatable members, normally inartive variable speed drivingdevices to successively operatively connect the driving and drivenrotatable members, clutch elements corrotsponding in number withthedriving devices and adapted when actuated to render the driving devicesoperitive, a movable snift-I ing' inemlier, lioliss corr :spniiding ininni" with die cliitcli elements and conn ftiril therewith and adaptedto be siieeessivifly moved into operative engagement n'itli tlieshifting members and selective menne to move one of the bolts intoengagement ivitli the shifting member wliile then otlieis distingage theszn'ie.

(l. ln transmission gearing, driving?, and driven rotatable inexiibernnnormallyiniie tive variable speed driving devices to Sno eessivelvoperatively connect the. driving :ind driven i'i'iembtrs, elementscorresi'ionding in nnnilier 'with tlie driving devises :ind adapted wheniietiisitid lo i'iiiniler iin* saine operative., i resinrefineryshifting nien'il'iei provided with 'noli ri-i l ring :ii-omis, boltscorrfilsponding in niiinl'ier with tlie eley ments :ind connectedtlierevvirli'tinfl z-.ilapb ed to be successively nmvifd ino tlie boltreceivingv means of the shifting member, and soleetive means tosieoessivel'y move one of the bolts .into tlie bolt receiving meansivliile the other bolts fire ont of tlie same.

7. In transmission gearing, driving :ind tlriien rotatable .nien'iliermviirialile speed driving.;y devices lit-tween tlie driving and drivenmembers, elementil corresponding in n un'il'ier witli (lie variablespeed driving devices and ailnpted to control tlie operation thereofwith respect to tri'insmitting rota.`

. tion from llie driving member to tlie driven member, :i movableshifting member pro vided with bolt receiving means, bolts coiresponding in number willi tlie elements and minnen-d therewith forinfiirrmeiit into and ont of ille bolt reeeii'ing; nir-:ins to move thebells in one dirwiei'n s tiva :iieans to move tlie minis. and means tomow the bolts in :in opposite diiwtiro ln triinsini on owning: dri Y llrivvn rotiiiliililtnlriiiliers.v viir: 'iiewl dei lniftviiirn fvlitdriving; and

to move the same in one direction, cams en with bolt receiving notchesin transverse ralinement with the first named bolt receiving notches,bolts corresponding in number wlth the elements and connected therewithand arranged within one set of bolt receiv- `ing notches and mo 'ableinto the other set,

cams to move the bolts in one direction, means to turn the cams. meansto move the bolts in an opposite direction, and means to reciprocate theshifting member.

10. In transmission gearing, a driven shaft, a plurality of gearsnormally loosely mounted upon the driven shaft. means to drive the gearsat different speeds, devices adapted to lock the gears to the drivenshaft to rotate the same, movable bolts corresponding in number with thedevices and connected therewith, a shitting member provided \vith boltreceiving means, means to move the shifting member, and selectivelyoperated means to alternately move the bolts into the bolt receivingmeans, substantially as described.

11. In transmission gearing, a driven shaft, a plurality of gearsnormally loosely mounted upon the driven shaft, means to drive certainof the gea rs at different speeds and one of them in a reverse directionWith relation to the others. devices adapted to lock the gears to thedriven .shaft to rotate the same, movable bolts corresponding in numberwith the de\ices and connected therewith, a lock bar extendinglongitudinallv of the driven shaft and provided with notches to receivethe movable bolts, a re ciprocatory shitting namber extendinglongitudinally oiI the lock bar and provided with notches to receive thebolts, means to move the reeiproeatory shifting member, cams arranged toengage with the bolts to move them in one direction, a cam-shaftcarrying the cams, means to turn the carnshaft, and means to move thebolts in an opposite direction.

19.. In transmission gearing, a driven rotatable member, a plurality ofgears nor mally loosely mounted thereon. means to drive the gears atditfcrent speeds, clutch mechanisms to lock the gears to the drivenmember embodying clutch elements splined upon the driven member,shifting forks engaging the clutch elen'ients to move the same, a guiderod receiving the shifting forks thereon, reeiprecatory bolts slidablymounted upon the outer ends of the shifting forks. a stationary lock barhaving notches to receive the reciprocatory bolts. a reciprocatoryshifting bar havingnotches to receive the reciprocatory bolts. means tomove the recii'n'ocatory shitting bar, cams engaging the bolts to movethem in one direction. means to turn the cams. and means to move thecams in an opposite direction.

In testimony whereof we afl'ii; our signatures in presence oi twowitnesses.

DONALD S. LlCECH. MERLIN S. EVANS.

